The mismatched/wrongly scaled components in the various kitbashes are kind of interesting. Triple size Constitution-refit nacelles attached to Excelsior components (to say nothing of an Excelsior where the saucer is mounted at the rear!), an oversized Constitution-style bridge dome on the Centaur (which I guess would be a 3 deck STXI-style module), and whatnot. Then again, TNG's Wolf 359 kitbashes simply scaled down Galaxy-class components by drawing on bigger windows and the TOS and TNG shuttlecraft featured far smaller yet similar nacelles to their respective motherships. I guess a warp nacelle (or whatever component) of the same type works just as well at 10 meters long as 100 and 300.